Pain Managment in Preterm Neonates

"Intra nasal fentanyl group: will receive intranasal fentanyl using nasal dose of INF is 1.5µg/kg/dose, and typically one dose is given After 5minutes, a second dose could be administrated based on the clinical assessment (maximum two doses per procedure).~Intravenous fentanyl group: will receive intravenous fentanyl 1 µg/kg/dose and typically, one dose is given After 5minutes, a second dose could be administrated based on the clinical assessment maximum two doses per procedure.~Measure MDA Malondialdehyde level as oxidative stress marker in pain response , venous blood sample 0.5 ml will be collected twice, just before and 30 minutes after the procedure.~Monitor adverse events after fentanyl use as apnea cessation of breathing for \>20 s, bradycardia heart rate \< 100 beats/minute, desaturation oxygen saturation \< 80%"